Co/Cr/Pt PVA Microchannel PS_PVAC Polytetrafluoroethylene Tin disulfide FrictionForce Copolymer electrospinning MoirePattern Growing hard_disk_media temp_control Vac VortexCore cross section LowDensityPolyethylene aluminum_nitride AIN AAO PtfeMembrane kelvin probe force microscopy Current SiliconCrystal WS2 Flake C60H122 Phthalocyanine PvdfBead UnivMaryland Jason Defects Transparent GaN AdhesionForce